Edit readme

README.md

@@ -3,7 +3,12 @@ Based on [Material theme](https://marketplace.visualstudio.com/items?itemName=ms
 
 ![Colors](https://raw.githubusercontent.com/peymanslh/vscode-blueberry-dark-theme/master/colors.jpg)
 
-## Screen Shot
+### Installation
+Launch VS Code Quick Open (⌘+P), paste the following command, and press enter.
+```
+ext install blueberry-dark-theme
+```
+### Screen Shot
 ![Screen Shot](https://raw.githubusercontent.com/peymanslh/vscode-blueberry-dark-theme/master/screenshot.png)
 
 > The font in the screenshot is [Operator Mono](https://www.typography.com/blog/introducing-operator) .